Naturally, the bigger the temperature difference between the source (say, the ground or the air) and the target flow temperature, the more electricity is used by the heat pump and the lower its coefficient of performance (COP), the key metric for the performance of heat pumps. [...] The seasonal coefficient of performance (SCOP) is the average performance of a heat pump over a year and is the key metric needed to calculate heat pump running costs. [...] The heat pump sizing needs to ensure that the heat pump itself is large enough to meet the peak heat demand; that is, the highest instantaneous heat output needed from the heat pump to heat the house to a comfortable temperature on the coldest day (measured in kW). [...] We note that the National Standards Authority of Ireland has heat pump installation guidance which covers some of these elements and sizing in particular.33 The Superhomes project also provides valuable, evidenced examples of how to optimise air-source heat pump performance.34 The availability of skilled installers and the development of heat pump supply chains should be a key focus for the Govern. [...] According to a note by the Sustainable Energy Translating the HLI into Authority of Ireland (SEAI),35 as part of the peak heat demand technical review for the heat pump grant For context, at an external temp of scheme, a fabric first approach was taken, -2ºC and internal temp of 21 ºC; meaning that before a heat pump is installed, a that is, a delta T of 23 ºC (peak house must meet a minimum fabri.
Authors
- Pages
- 29
- Published in
- United States of America
